<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			a:link {
				color:blue;
			}
			a:visited {
				color:red;
				}
			a:hover{
				color: green;
			}
			a:active {	background-color: #FFFF00;}
		</style>
	</head>
	<body>
		<a href="外部css.html">外部CSS</a>
	</body>
</html>
